Phonograph stop



W. C. ROE

PHONOGRAPH STOP Filed Dec.

Dec. 9, 1930.

l l l Patented Dec. 9, 1930 l WILLIAM c. Ron,Y or PITTSBURGH, PENNSYLVANIA PHONOGRAPH STOP Application vfiled December 17, 1927. serial No. 240,773. f

n This invention relates to improvements in phonographs and more particularly to an automatic stop mechanism `for the same. One of the objects of my invention is to provide an improved automatic vstop mechanism j for phonographs which cooperates with a brake to automatically applythe braketo ,stop the phonograph after the end sound groove on a record is reached by the stylus. Still another object of my invention isto provide an automaticbrake mechanism which may be attached to any of the' present standard talking machines without materially altering the same. Another object of my invention resides in the provision: of an improved phonograph stop mechanism which may be pre-set independent of the tone arm, and which when in pre-set position will notinterfererwith the playing of the phonograph, but when restored therefrom will eifectstopping of the phonograph. f n j j c Another object of my invention is to provide an improved automatic stop for phonographs which will be durable in construction, simple and positive in operation, and economical to manufacture.

These and other objects of my invention and the invention itself will be apparent fromreference tothe following 'description of certain embodiments thereof, and in which descriptionreference will be .had to the accompanying drawings forming a part ofthis specification. Referring to the drawings: f c Fig. l is a top plan viewof a fragment of a phonograph embodying a preferred form of my invention, in braking position;

Fig. 2 is a similar kview of the foregoing embodiment, in non-braking position;

Fig 3 is a verticalsectionalview ofthe foregoing embodiment, some of the parts being shown in elevation. l Referring now to Figures l to 3, inclusive wherein like parts are designated by like reference-characters, at l, I show a fragment of the top of a phonograph cabinet, vat 3, a disc record supporting turntable, supported on a motor driven spindle 2having a down- '50 turned peripheral ange 4. A tone arm 7,

`means ofits Vpolygonal upper flange.

supporting a sound-box 8, having a reproducing stylus needle 9 is pivoted to swing in a vertical planeon the cabinet above the turntableand disk. n f

IA bas'eplate 2l, secured by screws 22 to the cabinet below they turntable and adjacent the Cal 'vfperiphery thereof supports the mechanism. Aninternally threaded aperture 23 is provided in the plate 2l into which the reduced threaded portion25 of a post 24 Vis threaded. An internally threaded bore 26 at'the upper end of the post 24 is adapted to receive a machine screw 27 to retain a cap 28 on the upper end of a hollow outer sleeve 29. A hollow block 30Vis rotatably mounted on the post 24 adjacent its lower end within an inner hollow sleeve 3l telescoped within the `hollow outer sleeve 29, said block and sleeves-being disposed in co-aXial alignment with the post 24. A lspiral contractile spring 32 is coiled about the post 24, the free ends being anchored in suitable apertures in the cap and block. Ten- .sion upon the spring 32 is adjusted by loosening the sore/w27 and turning the cap 28 by I The outer sleeve is held against rotation on the inner sleeve by virtue of a set screw 33 screwed into the threaded opening 34 in the-outer sleeve against the inner sleeve outer periphery, which screw may'also permit'relative ad- -l`- justing of the inner and outer sleeves.

The outer sleeve is reducedat 35 to receive the hub offan arcuate pointer 36 placedvand secured by turning the reduced end portion ofthesleeve over the edges of the aperture il' 87 in the arm. The pointer 36 isprovided with a reinforcing rib 38 and a handle 39 and is adapted yto extend over the turntable and disk record and of sufficient length to A be vcontacted with the needle 9 when the same has reached the innermost groove in the record. The endof the arm mayl be formed with an inclined portion 40 adapted to be engaged by the needle to apply the brakey in a manner which will hereinafter be described. The arcuate form of the pointer permits it to lie closely to the rim of the turntable when in normal position. j

.A plate 4l having a curved` edge 45 and x a relatively straight edge 20, is carried by n n vvinafterjbemoreffullydescribed.v

making ratchetng engagement" with' the the block y and held under tensionby theVV n coiled spring 32 and is adapted to support a ratchet Wheel 42 adjacentl a ,central portion thereof, said ratchet Wheel being rotatable konta vertical axis on a pin 43 threaded into end of the plate 41 is pierced and threaded Vat. 46 to receive a screw 47 for pivotally sup# f, porting val bell crank "ratchet lever 48.A 'Said leveris provided with a'hooked arm 49 and a relatively short.ax=1 n50.;l ,f #At-f,8Offlrshovv;KA 0ainst ack-1 iifizn'efi. weight element 51, having. a dovvnturnedl a pad which protects the record a 'cidental damage by the arm k36.

tongue 6 is pivoted `sepa-"rately on-"thescrew r47Vffor apurposeV later set forth, y

"Ainnpstanding projection 53 -sv provided- `onftheiplatef.tofprovide a st'opto limitthe movement of the ratchet tooth` ofthe ,arm vlfheyshort arm 50y of the'ratchettooth "leverf48{isdisposed,between any arm 54 sey 'i kcuredaft-"55 tojthelinner `sleeve-31 and fallat .fspringf'56disp'osedL'to/oneside of the'yarm 54. Q n u standingjapertured I projection 57 L'is aspiran; ed "jon: @me 'Sida-f the par@ 45mm whlfc'hfa setSCreW 58,` is screwed to retain the jarm'54 'in certain adjusted positions. The "arms,36; and'54iand the plate 45 and its as- ;on the vpost k24,6f,1` ,u)1r1 a. braking position 'tolanQn-braking positiOIl whichvvill here- Secured by screws and l' to the base vplate 2'1isayg'ear element 62 which isy suby35 stantially semi-circular and provided with teeth 63 meshed Withf the teeth`of a pini'onf64'secured toandabove thearfatchety wheel 42 vand.jour'naledsfor rotation Aon the provided withan aperture 65j, into whicha machine rs crewis ldisposed to pivotally sup- A port albell crank "lever 66 carrying a 'brake' lschio/e 67`at oneend and a friction block"68` onthe lever yportion 69Ycfor contactbythe carved faqs/15 yoff the pate n. n c

Toconditionthefstop mechanism' for oper.-

k 4ation, thejpinter36 is swung on its pivot into ,setV position A'shown Vin Fv1g.2,A` carrying 'with 'it the plate 45 anjd its associated Vparts and "also thearm 54 with the'detent arm 49 yratchet wheel 42,'to prevent Qafreturn of the mechanism. The brake arm '66"pivoted yat 65 is providedwithfa' shoe'",V normally restinguponfthe inner'surface' of theflan e 4. The dotted "arcuate line 71'indicates tile course traversed Vby the pointer 36 when Vset ,'forfthe `automatic'fbraking operation. The dotted arcuate line, 72;indicates the course 'bl' ic'lfi andes l,the ,needle iS 'moving `ftovva'rd ythe y innermost groove on lthe record "towards thefinclined tend of the pointer 36.

themarm 54 to engage with the short yarm 50 of the .ratchet lever and movev the, ratchet ,a threaded aperture inthe plate 41.l The,

Aweraga e the yteethof the ratchet wheel' 42 initilt e ratchet wheel has ceased to move 'Ibryfvirtlile'-` rof ther cessationfofcmovement of the 41, attheendo'f'the stroke.

'-:Having thi'lsjdescribed; my invention ina specific mbofdm'ent I [am laware `that nu-y --merous and tensive g. departures may be mdeifpromthe embodiment, herein illustrat- Y Y ettndfn'escribedbutwithoutideparting from sociated parts are adaptedto-swing in unison f Y v l. l In combination "with fa` r.Plx'lgraph of l ithe-fypemplyieg discjrecord'e a' turntable,

fa' reproducerfelement adapted; to traverse aV /tmcordr laced onthe tunjta naHedl) face of s s Y n v v lposite to jthedrectionfof.travel of the repin 43. One extremity of the plate2l is,A

fset jin the Vpath'k of thereproduce'r ,element f at the endof'theecordthereon, aspx-ing conof the stylusr lne'efdl'e Irelatively 'to-the rlota't- 71 and 72it hasv engaged the inclined end of ythe pointer 36 and shifts the'same slightly .Y Y

to the left, Vthis slight movement causing f arm 49` out of engagement with thevratchet @euses the ,pointer to.k return` to normal positionshown in Fig. l, theA pinion .64 rotating on 'the gear segment 62'until the curvedk face 75 'Yzoftheqateflienglges the friction block cieinertiajof: thejlweight 51 exerted against 4thefrate*het by'l the, tongue 6 overcomes Y,the tendency offthemratcheti lever to 'thespirit f my invention"l Y 1e, afp'ointer jouraterallyr offthe `phonograph' turnable -ga'd "ted to ,be"s wung everlthe upperr sin'- tlie "supported recordinV a. direction' opproducer; a portion' theredffadapted 'to fbe sitantlytexerting aneiort to restorethe point- Aerflto its normal 'positionia ratchet' rmaeha-y .DSIXI adapted-t04 retain, the pointer'infthe path f if the reproducenajid means actu'atablefb'yy a l,.110

slligi'hit:pressnrejcentact'ofthereproucer le- 'the pointe-Mofa nrnalfposition ateralofthe record.v V

innermost, groovev ofli't e 'recordymeans' to "TQQ-in? thefpoilltef'll. 51,101.1. ad, '1.151355 PS'JDD, 125

'vandril'eans actuatalleby a sllig t pressure 'con' ftat .the ,reproducerfelm't agains'tgthe Y pterito'restotexhePainter fmdfto actuar@ 1n an'aaomaiaaepffofaannam, a

`rteeth of theage-ar Wheel 42. The spring 32 pointer, relatively fixedmeans disposed adjacent the rotary element and engageable therewith during a range of set positions thereof, said element normally rotatable by virtue of the engagement of said rotary element and said fixed means, a latch to prevent relative rotary movement of the element and the said means, to lock the set7 element in a set position relative to the fixed element, a trigger movable upon slight movement of the pointer caused byimpact therewith by the mechanism part to trip the latch, said spring being operative to thereupon restore the pointer, and inertia means adapted to hold the latch inoperative during restoring movement of the set element.

4. In an automatic stop mechanism for phonographs, the combination with a phonograph turntable, a swivelable pointer normally biased toward a normal position and adapted to be rotated over the face of the turntable and the record carried thereby to a set position, a support for said pointer, a plate below the turntable rotatable with the pointer, an arm secured to the pointer and movable therewith adjacent said plate, a pinion, and a toothed element in driving engagement therewith, said toothed element carried by said support with its teeth disposed concentrically of the pointer axis, a ratchet carried by said pinion, a ratchet detent engageable with the ratchet, said arm engageable with the detent upon an initial movement of the pointer from a set position toward its normal position to move it from engagement with the pinion element, said detent being normally biased toward pinion engaging position, and an inertia element operative responsive to the return movement of the plate toward normal position to hold the detent out of engagement with the pinion, and means operated responsive to the return movement of said plate to stop the phonograph.

5. In a phonograph comprising a rotatable record support, a. stop mechanism therefor comprising an index arm movable from a normal position laterally of the support over the record, a spring tending to return the index arm to normal position, a ratchet adapted to retain the index arm in its set position in opposition to the spring, a trigger for tripping the ratchet, actuated by a slight pressure contact of a phonograph tone arm supported part against the index arm in traversing the record to operate the trigger, and means effective upon a tripped return movement of the index arm, adapted to discontinue rotation of the record.

6. In a. phonograph comprising a rotatable record support, a stop mechanism therefor comprising an index arm movable from a normal position laterally of the support over the record to effectrotation of the support, a spring tending to return the index arm to normal position, a ratchet adapted to retain the indexarm in its set position in opposition' to the spring, a trigger for tripping the ratchet, actuated by a slight pressure contact of a phonograph tone arm supported part against the index yarm in traversing the record to operate the trigger, and means effective upon a tripped return movement of the index arm,adapted to discontinue rotation'of the record. v y

f 7. In a phonograph comprising a rotatable record support, a stop mechanism therefor comprising an index arm movable from a normal position laterally of the,v Support over the record, a spring tending to return the index arm to normal position, a ratchet adapted to retain the index arm in its set position in opposition to the spring, a trigger for tripping the ratchet, actuated by a slight pressure contact of a-phonograph vtone rarm supported part againstthe index arm in traversing the record to operate the trigger, and means effective upon a tripped return movement of the index arm, adapted to discontinue rotation of the record, and inertia means responsive to the restoring of the yindex arm adapted to continue the ratchet in disabled position to which it is tripped, 'during the return movement of the arm;

8. In a phonograph comprising a rotatable record support, a stop mechanism therefor comprising an index arm movable from a normalposition laterally of the support over the record to effect rotation of the support, a spring tending to return the index arm to normal position, a ratchet adapted to retain the indexV armV it its set position in opposition to the spring, a trigger for tripping the ratchet, actuated by a slight pressure contact of aphonogr'aph tone arm supported part against theindex arm in traversing the record to operate the trigger, and means effective upon atripped return movementfof the index arm, of the record, andfmeans comprising said spring and a weight adapted by inertia to effect complete return of the index arm after tripping thereof, to normal` position.

9. In a phonograph comprising a rotatable record support, a stop mechanism therefor comprising an index arm movable from a normal position laterally of the support over adapted to discontinue rotation the record to eli'ect rotation of the support, a l

spring tending to return the index arm to normal position, a ratchet adapted to retain the trigger, said trigger actuated by a-slight pressure contact; lofkla phonograph tone arm Y Vsupported part against the index arm ,in

therewith, and

I element against the c discontinue rotation of the; record,

traversing the y record yto voperate the trigger, and brake means eifectiveupon a'tripped re-- turnmovement of the index arm, and means comprising said spring and a Weight adapted by inertia to: eifect complete return of the index arnisafter trippingfthereof, to -normal ,l

position. y ,f p s 10. lIn anphonograph mechanism, comprisinga turntable` andi a; reproducer velement adapted to sponsivei tojthe Ypre-set positioning of. said pointer to effect actuation of said stop means when the reproducer element reaches the said predetermined position. relativeto the f position of the pointer element. q Y

, In testimony'whereof Ihereunto aHivKX-,my -Signature this 25th day ofMay, 1927, Y ,K l n YWILLIAM o.- RoE. s

movable yover thev turntable,ja stopqfor said f turntable,y comprising a brake engageable therewith, and Vra pre-set pointerf movable from a normal position laterally `of the recf pomter'portion rtoa position adjacent to the end able y apsligh't pressure contacte-of the reproducer elementy against the-pointer, to reover the 'record to'adjustably bring'its roove of the record,'an"d,means actuat- Y Y store thepointer, and to actuate the-brake. f y

i ,'11. In aphonographfmechanism, comprising a turntable p anda reproducer, element movableover the turntable, a stop for said turntable, .comprising a brake. engageablek- 'y apre-set'V pointer; movableY from anormal position laterally of the record overthe'record to adjustably bring itsfp'ointer 4 portion yto agposition adjacent'to kthe end groeveof the record, and means actuatable by Y i ,Y

a slight pressure Contact ofthe reproducer c s' pointer, to restore the pointer and to yactuate ythe brake, and a brush Vcarried by thev pointer, and adaptedto contact with a record'on the turntable 12.` VIn a phonographv mechanism, a stop therefor comprising a turntable and brake Y therefor, and

y a pointer movable fromr anormal position; lateral of therecord" over the record in adirection oppositek toi the direction of travel ofthe reproducer toany of a pluralityy ofadjusted set,posi`tionsl corresponding to the-radially disposed position of the 4innermost groove of the record, means'to retain the pointer in such .adjusted position, and meanskv actuat'able'l byy a slight: pressure contact othereproducer element against the 'pointerto yrestore the pointer and to actuate the bra-ke,

anda brush Vcarried by the pointer, and adapted to contact with a reeord on the turntable.l v

- l13.A Inaphonograph mechanism, a turntable, motor means to rotate the turntable, a reproducer element movable overithey `turntable-,while rotating, a stop mechanism for ythe turntable, yfor discontinuing Yits rotation i L', 7s

bysaid motor means, and a pre-set pointer f movablefrom anormal position laterally of the record over the record to adjustably bring` its.pointer portion to a position relativelto i the; record havingl a definite predetermined relation toy a position thereon, at which it is desired to discontinue movement y ofw therepxgducere1ment;thereover, and.y re- 

